Bip39 passphrase https://franciscougju442.bravesites.com/entries/general/Produce-Bitcoin-Addresses-from-Seed-Every-Little-Thing-You-Required-to-Know While it uses BIP32 process you may continue to import BIP39 seeds into Electrum wallet. Also in addition to BIp32 there is BIP44 Edition which some wallet use to the era of seeds. Because of the cryptographic style and design of BIP-39, ... https://bookmarkspy.com/story22146290/bip39-validator-an-unbiased-view-of-bip39-2048-words-https-x-com-tundra838554